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No Energy Ice Cream

Here's a way to make homemade ice cream without taxing the environment--no electricity is used. However sustained energy is needed, in the form of elbow grease. Just push, roll or shake (no kicking please) a magic football around for 20 minutes et voila. It's based on thermodynamics--by adding rock salt to the ice it makes the temperature drop to around -10 degrees which cools the ingredients and turns them into ice cream. You can add fresh fruit, berries, honey and make it as healthy as you want. It's a cool and environmentally-correct substitute for an Eskimo Pie. :: Firebox via :: Guardian